Electric controlling system



T. ZWEIGBERGK.

ELECTRIC CONTROLLING SYSTEM.

APPLICATION FILED MAR. 16, 1920.

m A d m w [/7 ye/flar 4/4 itira.

q was mh W L wk 3 wm "Wi mm m@ w r R wk R m E 4% L gm NQ SQ I LR Q NWQmm mm 7+ Qm \m g mossmn manual, or Lennon, anennm.

nac'rmc comaonnme svs'mu.

To all whom it may, mm.- 7 Be it known that 1,.THORSTEN Zwme mnox, a,citizen of the United States, residing at London, in the county. ofLondon, England,

have invented a certain new and useful Improvement in Electric,Controlling Systems, of which the following is a. full, clear, and

exact description, reference being bad to the accompanying drawings.

This invention relates to electric controlling systems wherein-a mainmotor driven controller is actuated through a manually operated mastercontroller. The essential object of the invention is to provide such asystem which shall be simple and effective in operation and by which theremote control of a comparatively heavy current may be readily,accomplished. I Anotherob'ect is to protect the. device by means renering it impossible'to close the circuit through the main motor, once itis broken, except when the main controller is positioned by includingall of the resistance. Other specific ob.- jects willappear in thefollowing description which relates to the accompanying drawing.

' The essential characteristics of this invention aresummarized in theappended claims.

The drawing comprises a diagrammatic illustration of a preferred arranement of this invention and the following escription refers to thedrawings by suitable characters designating the various elements of thesystem.

The main controller is illustrated as comprising a main contact plates,.11, 12', 13, 14, 15, and

16 ,while the broken lines 1, 2, 3, 4, 5, and

6,'parallel with the axis of the drum, c orrespond to the variouspositions, or, notches,

ofthe controller; At20 is indicated the main positive or plus wirecarrying the cur rent, it is desired to regulate, by-the main controller10. This Wire lcadicurrent to a contact 2.1, with which a contact 22 isadapted to co-act, and fromthe contact 22 the current passes through awire-24 to resistance 25 to which are connected the contacts 31, 32, 33,34, and 3c. the resistance a wire 26 leads through the main motor 27 andto' the ground as indicated at sively are brought under the contacts 31to drum 10 carrying a plurality of by the vertical '28. As the contactplates 11 to 16 succes- V Specification ot'Letterl Patent. Patentgd Apr,11, 1922, Application and 1mm 10, mo, mm Io. seam.

36 the resistance is cut out by reason of the wires 30 interconnectingthe contact plates 11 to 16, as shown.

Moving with the main controller, and for convenience shown as mounted onthe same drum 10, are auxiliary contacts which cooperate with themanually operated master controller to govern relays in the operation ofthe system as will behereinafter more fully described.

The main controller drum is illustrated as rotated by a motor 40 whosearmature shaft ,41 may have a worm 42 co-acting with the worm gear 43.-on the shaft-of the main controller drum, while current passing througha wire 44, the usual resistance 45 and through the field (mils of themotor a wire 46 leading to a contact pointat 7 to a contact point 8through the plate 47 to a wire 58 through the armature brushes 57 andthe armature, wire 58, wire 48 contact 9 and wire 49'to the groundindicated at 50. A plate or carrier 52 is shown as. attached to ,thepivoted arm 54 carrying a contact 22 and having core or armature 55within a solenoid coil-56 to actuatethe' contact 22 as well as move theplate 52 and the contact plate 47 and 9. One of the wires 58 is broken bseparated contacts 60 of a relay having a ridge member 62 normallyextending across the contacts and carried on a core 63 projecting into acoil 64, while these wires 58vmay be connected to short circuit thearmature by any of the series of. contacts 65, '67 and 69, oneof eachpair being connected with a wire 58 and being adapted to be bridgedliycontactmembers 66, 68 and 70 carried by solenoid armatures the coils forwhich are indicated respectively at 71, 72 and73.@

-, It will be seen that when any of the contact members 66, 68 or 70'are moved to their upper positions, the wires 58 are connected in such amanner as to. short circuit the armature, These solenoids for shortcircuiting the armature are controlled by, the master cont llerindicated at 75, preferably of a-drurfi type, havinga plurality ofcontact plates on its, surface. and movable to various positions ornotches as indicated broken lines designated 1, 2, 3, 4, 5, and 6.Co-a'cting with the contact plates onthe controller 75 are a series of 6id 56 carries'plate 52 I the motor 40. and rotate, moving the currentflows through 7 current cannot cause the rotation of the mo- 'the mastercontroller contacts 80, 81, 82, '83, 84 and 85 while the contact plateson the controller are interconnected in the usual manner. 4 i Theremaining parts of the systemshown may be made moreclear by in the courthe operation of my system;

In position shown in the drawin the master controller and main contro er10 are in the ofi now the master notch, which on controller is moved tofirst the diagram would be such a movement as 'to bring .the line l of fthe controller 75 .under the series of contacts.80y

to 85, current will pass from apositive or u p y Wire leading to thecontact a through the contacts on the controller to the contact 81thence through atwir'ef87 solenoid 56 to a contact 88 throu hia'wi're 89to a contact 90 engaging one o the contact plates 91 associated with themain=controller drum and thence through a} ground, indicated-at 93.The-"result is, the core 55 is moved upwardly closing the' ma-incontacts 21 and 22 sothatthe main current may pass through the wires20,24 and main res1stances 2 5,-motor 27 and to the ound. his samemovement of the core of t 'e sole- {withit, moving the contact-plate 47into engagement'with contacts- '9 and'7, and grounding wire 146 throughcontact 8 and plate86; whereu on the motor 40. Erie tor 4Oandiconsequent, movement of the drum 10, however,- because the armatureof the motor 40 is short circuited,at the contacts y ing the contact 62,when zler is moved to its fourth position bringing 65, by current fromcontact 80 to the contact 83 and wire 94 leading through the relay 71wire 95 and contact 96, which is brid across to the plate 91, shown asgroun ed when the main controller is in this positionas'previouslystated. Thusthe movement of to position 1, causes currentto pass through the main motor and all of the main resistance in circuittherewith but does not cause a movement of the main controller. a i r v113- now the master controller is moved to position 2, gthat is, on thediagram bringing the line 2 o thecontroller 7 5 under the row ofcontacts 80 to 85) the circuit through the relay 71 is broken by reasonof the contact 83 passing off from the corresponding contact plate on'the controllerdrum 75, thus breaking the short circuit of the armatureof allowing that motor to main controller drum to its position 2. Y Themovement of the main controller drum when it reaches position 2, is

action of the auxiliary contacts moved by the main controller 'drum andcausing the armature of the motor 40 to again be short bringing thecontact circuited at that time by tact 84, which is brou h referring tothem se of the following description of troller from 'circuiting of thearmature of the control or inoperative position. If

its third 'tactorsolenoid 56. The s contact 92;:to the on the drum 7 5under the I closes a circuit and contact 104, when that contact. comes aThe sub se uent contact 96* grounded at 93 as -before.

1 accordingly are reached by the operated by the supply wire 80, wtroller 75 is moved to its other words,

motor 40, allowing it to rotate the main controller drum but at the sametime connects a circuit from the wire 80 through the relay 72whichcircuit'is closed to the ground by wire 99and contacts 98 and97,and 91 and 92, when the main controller motor reaches ts secondposition.

controller 75 is moved to position- -('in the diagram bringing theline 3under contacts 80 to 85) the current is still passing throu h the mainconort circuit from the armature ofthe motor 40 is again broken, but isclosed by bringing the contact plate v contact 85 which through thewires 102, 103

When the master onto a contact plate 105, closing a circuit to thegroundat 93 from the supply wire. 80; thus moving the contact 70 of thesolenoid .73 to short circuit the armature 40 and sto the'maincontroller drum in its third pos1- tion'. I

main 'cont ro ler rum, are reached in' the same manner 'as those themaster control feed wire 80 through the contact 82, wire and coil 64 tothe ground at 112. -The control motor is stopped when the main controller 10 reaches its fourth position by reason of the contact 83coming onto another contact plate in the fourth position of the mastercontroller, which passes current through the solenoid relay71, wire 95and a ositions,4, 5.and 6 of the this same time contacts .connectedbywires 116 with the contacts 60 complete the short circuiting of thejarmature through vconnected contact plates-118. These extend across the4th, 5th and 6th positions of the main controller. The 5th and 6thpositions same action of the re ays and auxiliary contacts as those toreach the 2nd and 3rd main controller, there being contacts 98' and 1 05coacting with thecontacts- 98 and 104 toy-ground the current through therelays 72 and 73 as'befor To return the main controller to neutral or01! position, the master controller 75 positions of the v cuit from thefeed w1re'80 through the main is brought to its ofi positiomwhich isthat shown-1n the drawings. This breaks the cirparts to the positionappearing in the raw-' 48, and'contact. 9, wire 49 and Fhis brings theparts, under the control;

solenoid 56,. to pos tions shown, where the current passing through themotor 40 Z jis returned through thewire 46 tOthGKWl-IG 58 through thearmature and wires'58land thus changing the direction 0 through the;armature with relatlon to the .field and reversing the motor. Thisreversnoid .56 cannot again be-actuated until the 'maincontroller; thatis, because'the plate 86 is separated from the-contact 88j-thesolea,

- noid current cannot be grounded either at 50 or 93 until the contact 9is -grounded, whereas when the contact 221s raised carr. mg the plate 52upwardly, the contact. plate .6 comes ounderthe contact 88 and serves toground the solenoid 56 regardless of the position ofthe.

auxiliary contacts, of the main controller,

a and as long as the contact 22 is up in enga e mentlwith the contact21. vAlso whent 1s.

. 7 plate 52is' raised the current passing through the motor and j itsarmature has a path such that the motor rotates in the direction toadvancethecontroller drum 10 from position'l to osition 2, 3, etc.

From thls it will be-seen that the arrange-, ment of auxiliarycontacts-is such that the system is in efiect, interlocked-in amannermaking it impossible for the main oontactor' solenoid to .act, once itis broken, until the main'controller hasreached its ofi osition.

- This has a material advantage,-i that it eliminates blow-outsof fusesandsimilar difficulties.

Having thus described m inve tiomwhat, Iclaimis: v I

, 1. Thecombination with a motor of a series of resistances in circuittherewith, a controller for successively varying said resistances, amotor for actuating the-controller, a plurality of means for-shortcircuiting said motor tostop it, and means moved by the main controllerfor controlling said-,m'otor stopping means, said means beingselectively operable.

2.. The combination with a motor, of a series of resistances in circuittherewith, a controller for successively varying said resistances, amotor for actuating the controller, means for short-circuiting saidmotor .to stop it, said means including a plurality contro ler. I

., stopping and startin said lastnamed motor, "a mastercontroller oroperating said relavs "-and auxiliary-contacts moved with the maincontroller 'for actuating said relays to stop themain controller in itssuccessive positions.

4.--In'asystem ofthe class described, the combination of a vmotor in anopen main "circuit, avariable resistance, means for closmg said circuit,a controller adapted to sue- V p I -,cess 1vely var said resistance,aimotor for mg movement must ,completedas the soleactuating saicontroller, a master controller,

aseries of auxilia contacts moved by the maincontroller an connectedtogether, and

circuit making and breaking means for govern1ng said auxillarymotorunder control of tr oller for governingsaid resistance, an aux- 1harymotor-for operating the main controller, a master controller forgoverning ,theinain motor circuit and auxiliary motor c 1rcu1t, a seriesof contactsmoved with the main; controller, and circuit making andbreaking devices adapted to control the stopping and starting offtheauxiliary motor at each successive position of the main controller andconnections wherebythe master controller closes'a circuit to said mainmotor directl in the initial position of said main 6, The combinationwithla main motor and resistances in circuit therewith of amaincontroller movable to successivepositlons-to. vary sa d resistance,an au'xi iar q motorflfor mOVIIig the main controller, a

,master controller for governing said: main motor circuit and saidauxiliarymotor, circuit' 1naking and'breaking means for short circUitingthe armatureof said-auxiliary motor conse uent upon the main controllerreaching eac successive position.

7. In combination, a motor and resistances in circuit therewith, a maincontroller for cutting out said resistances in a series ofsuccessivepositions, an auxiliary motor for actuating said main controller,'acircuit therefor, a master controller governing said circuit and thecircuitof the motor,

means wherebyfirst ande'ac'h successive position of .the} mastercontroller may close the circuit throught the .main motor, a series'ofauxiliary contacts movable with the main controller,- rela s governed bythe .master controller and sald contacts for successively controllingthe circuit of the auxiliary motor to stop it in each successiveposition of the main controller, and means for reversing said auxiliarymotor consequent upon breaking of the circuit through the main motor.

8. In combination, a motor and resistances in circuit therewith, a maincontroller for cutting out said resistances by movement to a series ofsuccessive positions, an auxiliary motor for actuating said maincontroller, a circuit therefor, a master controller governing saidcircuit and the circuit of the main motor, a'series of auxiliarycontacts movable with the main controller and rela s governed by themaster controller and sa1d contacts for successively controlling thecircuit of the auxiliary motor to stop each successive position of themain controller, means for reversing said auxiliary motor consequentupon breaking of the circuit through the main motor, and means forclosing the circuit through the main motor only when the main controlleris positioned to include said resistances. 9. In combination a motorhaving a lurality of resistances in circuit therewith, a

circuiting the armature of said auxiliary motor to stop the motorconsequent upon the main controller reaching each successive position,means for vopening said short circuit independently of said relays, andmeans moved by the main controller for remaking said circuit wherebyeach relay may function for another position of the main controller.-

11. In combination, a motor having a plurality of resistances in circuittherewith,

a motorfor actuating the controller, a plurality of short circuitingdevices for said actuating motor, contacts moved with said controller toopen the short circuiting devices, and a-master controller for actuatingsaiddevices. r

12. The combination with a motor, a

series of resistances in circuit therewith, a

controller for successively-varying said resistances, a motor foractuatln the controller, means for short circulting said second motor tostop it, and a lurality of means moved by the main contro ler for conitin trolling said motor stop ing means, and connectionsallowing theclosing of the circuit through the main motor only when the maincontroller is in its of position.

13. The elements described in claim 3 in combination with a, contact forclosing said main circuit and a switch carried thereby in co-operationwith the contact on said main controller whereb the circuit through themain motor can be closed only when the main controller is in a certainposition.

14, A system of the class described in claim 4 wherein the means forclosing'the main circuit may be active only in a certain position ofthe-main controller and which may remain active throu h successivepositions of the main control er;

' 15. In a system of the class described, the combination of a motor inan open main circuit, means for closing said circuit, a variableresistance, a controller adapted to successively vary said resistance, amotor, for actuating said controller, a master controller, a series ofauxiliary contacts moved by the main controller, and circuit making andbreaking devices for governing said auxiliary motor under control ofsaid master controller and said auxiliary contacts, and means actuatedby the 'main circuit closin means to reverse the motor under contro ofcontacts carried by the main controller. 4

16. :The combination with a main motor and resistances in circuittherewith, of a main controller movable to positions to vary saidresistances, an auxiliary motor for moving said main controller, amastercontroller for governing said main motor circuit through saidma-incontroller, circuit making and breaking means for controlling theauxiliary circuit toshort circuit the auxiliary motor when the maincontroller reaches a position corres onding to the position of themaster control er.

17 In combination, a motor .having a lurality of resistances in circuittherewitli, a main controller governing the resistance in the circu-itamotor for actuating the controller, short circuiting means for saidactuating motor, contacts moving with said actu atin motor, contactsmoving with said control er to operate the short circuiting means and amaster controller cooperatingwith the main controller to govern theactuation of said means.

18. The combination of a motor havin a plurality of resistances incircuit therewith, a main controller for successively varying suchresistances, an auxiliary motor for actuating the main controller, amaster controller, a series of selective contacts on each controller,the contacts on eachcontroller being connected together, means forselectively connectlng the (iontacts on the two conent conductors, saidcontacts on the con trollers being connected respectively to the powerand return wires of a circuit controlling the operation of saidauxiliary motor.

19. In an electrical controller system, two controllers each havingselective contacts progressively arran d thereon whereby when the firstcontro ler is moved to a position in advance ofthe position occupied bythe second controller, said contacts on the two controllers beingconnected when the second controller occupies a position behind that ofthe first controller, a wire connected to. the contacts on onecontroller, a return wire connected to the contacts of the othercontroller, and means for moving the second controller, said means beingunder control of the circuit closed by the connections between saidcontrollers.

j 20, In an electrical controller system, two

controllers, means for positioning one controller by means of the othercontroller, said means comprising a lurality of sets of contacts on eachcontrol er, the contacts in each set being progressively arranged,corresponding bri ging contacts occupying all of the positions of thenext succeeding set of contacts on each controller, connecting means forconnecting the corresponding contacts on one controller with the corresonding contacts on the other controller w en their respectivecontrollers occupy positions corresponding to the contacts respectively,all of said contacts on one controller being connected with one wire ofa circuit, and all of the contacts of the other controller beingconnected with a return wire of said circuit.

In testimony whereof, I hereunto afiix my signature. THORSTENZWEIGBERGK.

